We will demonstrate that the reflected flow mechanism accounts for (1) the formation of the auxin concentration maximum in the root tip from the initially unspecialized tissue and (2) the maintenance of the auxin maximum during early root development.
Descriptors of root development generally include maximum root length (MRL), which determines the baseline for access to nutrient and water resources, and root number (RN), root thickness (RTHK), and root length density, which determine the intensity of colonization of the soil profile and the ability to exploit soil resources within the baseline.
In the 1 D extended model with the robust set of parameters, the maximum of auxin concentration is maintained during root development.
Many transcripts showed maximum expression within one or two specific stages of root development relative to other stages, with all stages of development possessing distinct clusters of genes showing dominant expression within that stage.
Below-ground growth measurements included maximum root depth and maximum root spread, hereafter referred to as root depth and root spread.
The auxin maximum peak in the root tip is formed under the reflected flow mechanism, which may operate from the earliest stages of root development.
After leaves fall, energies go to root development.
It provides better drainage than a surface system because it removes water from the soil to the depth of the drain, providing plants a greater mass of soil for root development, permitting the soil to warm up faster in the spring, and maintaining a better balance of bacterial action, the air in the soil, and other factors needed for maximum crop growth.
Root development was monitored over time.
We extracted information from 24 published papers on QTLs controlling 29 root parameters including root number, maximum root length, root thickness, root/shoot ratio, and root penetration index.
